Hydrocarbon motor



R. HUH?. HYDROCARBON MOTOR. APPLICATION Fl-LED .lllLY26|1909.

'1,3395 1 2. Patented May 11, 1920.

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HYDROCARBON MoToR.

APPLICATION FILED IULY 26, 1909.

Patented May'11,1920.

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tl'oznego UNITED STATES PATENT oEEroE.

RUSSELL HUFF, 0F DETROIT, MICHIGAN, ASSIGNOR TO PACKARD MOTOR CARCOMPANY, OP' DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

HYDROCARBON-MOTOR.

Specification of Letters Patent. Patentgd luay 11, 1920 Application ilcd.Tuly 26, 1909. Serial No. 509,595.

To all whom 'it may concern: h

Be it known that I, RUSSELL HUEE, a citi zen of the United States, andresident of Detroit, Wayne county, State of Michigan, have inventedcertain new and useful Improvements in Hydrocarbon-Motors, of which thefollowing is a specification.

This invention relates to engines and in particular to engines ci thesleeve valve type. The invention is shown as applied to hydrocarbonengines, although certain features may be applied to engines of othertypes.

In engines of the sleeve valve type, in which the ports of the cylinderare controlled by one or more sleeve valves it is diiiicult to lubricatethe sleeves.

One of the objects oi' this invention is to provide means whereby thelubrication of the sleeves may be facilitated.

Another object is to improve the construction and arrangement of theports in the cylinder walls and sleeves.

Another object is to improve the ignition system..

Other objects will appear from the detail description and theaccompanying drawings which are illustrative of one form of theinvention, it being understood that the details shown and described maybe modilied in various ways within the scope of the claims wherein theinvention is deiined.

In the drawings,

Figure 1 is a vertical section along the line 1-1, Fig. 2, showing thepiston and the working parts in upper dead center position of theexhaust stroke.

F 2 is a plan view of a four-cylinder engine, the cylinders 1, 2, beingshown partially in section taken on the line 2 2, Fig. 1.

F ig. 3 is a diagrammatic view showing the piston and valve sleevescompleting the compression stroke.

Fig. 4 is a diagram showing the port openings of the engine.

In the embodiment of the invention shown in the drawings, a cylinder isemployed having inlet and exhaust ports which are controlled by a valvemechanism including a sleeve or pair of superposed sleeves. The sleeveor sleeves are preferably located in the cylinder and when two are usedthe piston may slide in the inner one. The cyl inder wall is providedwith ports separated by a bridge or partition and one of the valvesleeves (the outer sleeve in the drawing) has a port which issubstantially equal in width to the width of the bridge separating thecylinder wall ports. An ignition port may be located in the cylinderwall so that the port in said sleeve will successively aline with theinlet ignition and exhaust ports. The other or inner sleeve is providedwith two ports, as shown.

The valve mechanism is so operated that the cylinder inlet port is opento the combustion space on the suction stroke of the piston, both theinlet port and the cylinder exhaust port are closed to the combustionspace on the compression and tiring strokes, and the exhaust port isopen on the exhaust stroke of the piston, and during this operation thesleeve (or sleeves) of the valve mechanism moves in a direction to causeits port to cross the cylinder exhaust and intake ports in succession.

In the invention, as shown, the sleeves are reciprocated and in additionto this longitudinal movement, one of them, preferably the outer sleeve,is arranged to be moved about its axis. The connection be-r tween suchsleeve and the eccentric that reciprocates it is or' such form as willpermit the sleeve to be partly rotated during each stroke of the piston,and the sleeve is so connected to its rotating device that it may slidelongitudinally during its rotation and the rotating device may bedetached from the sleeve by a relative axial movement. This movement ofone of the sleeves tends to aid in distributing the lubricant over itssurface.

Referring to the drawings, 1 indicates the engine base or crank case towhich is bolted the cylinders 2. A piston 3 is arranged in each of thecylinders and is connected to the crank shaft 5 by means of theconnecting rod 4i. A valve shaft G is driven from the crank shaft bymeans of a chain con necting the 2 to 1 chain wheels on the crank andvalve shafts respectively. The cylinder head S is provided with aninward extension 8', of smaller diameter than the cylinder, forming anannular valve chamber 8". A cylindrical member or sleeve 9 is arrangedwithin the cylinder and extends from the inward extension Sot the headdownwardly into the crank case forming the slideway for the piston. Acylindrical member or sleeve 10 is arranged between the sleeve 9 and thecylinder wall. The upper ends of the sleeves 9 and 10 are shown asarranged in the space 8, the sleeves being movable relatively to eachother and relatively also to the cylinder, the cylinder head and thepiston. The inner member or sleeve 9 is connected to an eccentric on thevalve shaft, by means of a connecting rod 11, by which it isreciprocated.

The outer member or sleeve is reciprocated or moved axially and aboutits axis by suitable devices which comprise a connecting rod 12,actuated by an eccentric on the valve shaft 6, and a gear ring 14:actuated by a worm 18 on a shaft 17 which is driven from the valveshaft, as by a chain 19 and chain wheels 2() and 20 mounted on theshafts 6 and 17 respectively. The connecting rod '12 has its upper endconnected with a ring 13 having a tongue 13 arranged in acircumferential groove in the lower end of the sleeve 10, thisconstruction permitting the movement of the sleeve, about its axis,relative to the ring. The ring 14: surrounds the sleeve 10 and isprovided with a key or projection 15 which engages a keyway or slot 16in the sleeve, the ring being mounted between the cylinder and a bracket21 secured to the crank case and being thus retained against endwisemovement. This construction permits the ring` 14: to be detached fromthe outer sleeve, alfter the cylinder 2 has been removed, by moving thering axially relative to the sleeve.

The cylinder is provided with inlet and exhaust ports 22, 2-1, which areseparated by a bridge or partition The inlet and exhaust ports extendnearly around the cylinder and the inlet passage Q2 is common to thecylinders as clearly shown in Fig. 2. The outer valve sleeve is providedwith a port or series of ports Q5 vfhicli are shown as extendingsubstantially around the sleeve, the upper and lower sections of thesleeve being connected by ribs 2G. The inner valve sleeve is providedwith a port Q7 which performs the function of an inlet and exhaust port,and which extends nearly around the cylinder, the sections of the sleevebeing connected by ribs 28. An ignition device, in this case a sparkplug 31, is screwed into the cylinder wall, as shown in Figs. 1 and 2forming what may be termed an ignition port 31. The inner sleeve isprovided with an ignition port 32 which is adapted to aline with theignition port f 1 and the por', 25. The width of the ports in the sleeveis substantially equal to the width of the partition or bridge 23 sothat the port Q5 successively alines with the inlet ignition and exhaustports. The eccentrics 29 and 30, for operating the outer and innersleeves are placed about 30O apart, the eccentric 29 leading.

During the operation of the engine, the sleeves are reciprocated bymeans of the eccentrics 29 and 30 and the outer sleeve is moved aboutits own axis or rotated by means of the Worm engaging the teeth on thering which is splined on the sleeve. The ignition port 31 is located inthe same zone as the partition 23 and since the width of the ports inthe sleeves is substantially the same as the Width of the partition orbridge 23, the distance between the ribs 26 must be less than thedistance between the ignition port 31 and the passage 22 in order to cutoff the inlet port from the ignition port and thus prevent prematureexplosion.

The ignition devices or spark plugs 31 are connected in a series circuitby electrical connections 33 with the secondary of the induction coil ortransformer 3i. In case an induction coil is used, the primary isconnected in circuit with a battery 35 and a commutator 3G. An arm 37connected to the `governor mechanism controls the advance or retardationoi' the spark. Bridging switches 38 are provided which are adapted tobridge and cut out the individual spark plugs 31 for testing. Thesparking devices and the spark ports are located on that side of thecylinder where the side thrust of the piston is the greatest during thefiring stroke. In this way the valve sleeves are pressed against theignition ports and iorm a tight joint permitting high compression andpreventing escape ot gases.

By referring to the diagram in Fig. Ll, it will be more clearlyunderstood how the various ports are opened and closed. -The travel ofthe piston is indicated near the top ot the ligure by the zigzag line 33and the various positions of the ports at different 'times are indicatedby the wavy lines. It will, o'l' course, be understood that the size or'the ports is considerably exaggerated in order to make the diagramclear. The cylinder inlet passage is represented at Q2 in this ligureand the exhaust passage at 24, while the partition between them isindicated at Q3. From the diagram it will be seen that the ports oi thesleeves are in register with the inlet passage 22 during the entiresuction stroke or' the piston, this port opening being indicated bydiagonal lines 34. The sleeves then go out of register as they both movedownwardly during compression and firing stroke ot the piston, the innercylindrical member or sleeve thus closing the ports of the outer sleeveand protecting them from the heat of combustion, and the sleeve portsare brought into register again and into register with the exhaustpassage 24 during the exhaust stroke of the piston, as indicated by thediagonal lines at 35. The sleeve ports are fully in register as theypass upwardly over the partition 23 and closeV the exhaust passage andopen the inlet passage simultaneously.

Line 36 represents the moment of ignition when the motor is runningslowly, and the spark is advanced at high speeds to the point 37',indicated in the diagram. The dotted lines 38 represent the path oftravel of the spark plug port 32 and it is noted that this port is inregister with the port in the outer sleeve somewhat before and after themoment of ignition 36 has passed, the outer sleeve being at this time inregister with the spark plug. This spark plug is in communication withthe interior of the cylinder during the time indicated by the verticallines 39. The position of the various ports at the high speed firingmoment is illustrated in Fig. 3, showing both the inlet and exhaustpassages closed and the spark plug in communication with the interior ofthe cylinder.

Although this invention is shown as applied to hydrocarbon engines, itis obvious that certain features may be applied to other types ofengines. In the specific type of engine described, the valve mechanismcomprises two superposed or telescoping valve sleeves. It is possible,however, to operate the engine with a single valve sleeve and it istherefore to be understood that this invention is not to be limited to aseries of superposed or telescoping valve sleeves.

It is obvious that various changes may be made in detail of constructionWithout departing from the spirit of this invention and it is thereforeto be understood that this invention is not to be limited to the speciicconstruction shown and described.

Having described my inventon what I claim as new and desire to secure byLettersPatent is:

l. In an engine, in combination, a cylinder provided with inlet andexhaust ports, a piston working in the cylinder, a plurality of valvesleeves substantially concentric with the cylinder,`each provided with aport arranged to cooperate with the inlet and exhaust ports.

2. In an engine, in combination, a cylinder provided with inlet andexhaust ports, a plurality of superposed valve sleeves working in thecylinder, a piston working in the valve sleeves, and a port in each ofthe valve sleeves arranged to cooperate with the inlet and exhaustports.

8. In an engine, in combination, a cylinder provided with inlet andexhaust ports separated by a partition, a piston working in thecylinder, a plurality of superposed valve sleeves concentric with thecylinder, and ports in the valve sleeves arranged to cooperate with theinlet and exhaust ports, the width of the ports in the valve sleevesbeing substantially equal to the width of the partition.

4. In an engine, in combination, a cylinder provided with inlet andexhaust ports located one above the other and separated by a partition,a plurality of superposed valve sleeves working in the cylinder, apiston working in the valve sleeves, and ports in the valve sleevesarranged to coperate with the inlet and exhaust ports, the width of thesleeve ports being substantially equal to the width of the partition.

5. In an engine, in combination, a cylinder provided with inlet andexhaust ports separated by a partition, a piston working in thecylinder, a plurality of superposed valve sleeves concentric with thecylinder, ports in the valvelsleeves arranged to cooperate with theinlet and exhaust ports, the width of the ports in the valve sleevesbeing substantially equal to the width of the partition, and a pair ofangularly displaced eccentrics for operating the sleeves.

6. In an engine, in combination, a cylinder provided with inlet andexhaust ports separated by a partition, a piston working in thecylinder, a plurality of superposed valve sleeves concentric with thecylinder, ports in the valve sleeves arranged to cooperate with theinlet and exhaust ports, the width of the ports in the valve sleevesbeing substantially equal to the width of the partition, and a pair ofeccentrics Jfor operating the sleeves, said eccentrics being angularlydisplaced substantially 30.

7. In a hydrocarbon motor, the combination withk a cylinder having inletand exhaust ports arranged in different zones, and a working piston insaid cylinder, of a pair of valve sleeves arranged one within the otherand guided by said cylinder .and each having a port adapted to registerwith both said cylinder ports.

8. In a hydrocarbon engine, in combination, a cylinder provided withinlet, exhaust and ignition ports, and valve mechanism including a valveprovided with 4a port arranged to coperate with said ports in apredetermined order.

9. In a hydrocarbon engine, in combination, a cylinder provided withinlet, exhaust and ignition ports, and valve mechanism including a valvesleeve substantially concen-` tric with the cylinder and provided with aport arranged to coperate with said ports in a predetermined order.

l0. In a hydrocarbon engine, in combination, a cylinder provided withinlet, exhaust and ignition ports, valve mechanism including a valvesleeve substantially concentric with the cylinder and provided with aport arranged to cooperate with said ports in a predetermined order, andsaid valve mechanism being adapted to prevent communical tion betweenthe ignition and the inlet ports.

ll. In a hydrocarbon engine, in combination, a cylinder provided withinlet, exhaust and ignition ports, a valve sleeve arranged to open andclose said ports in a predetermined order, and a second superposed valvesleeve cooperating with the Iirst valve sleeve.

12. In a hydrocarbon engine, in combination, a cylinder provided withinlet, exhaust and ignition ports, a valve sleeve substantiallyconcentric with the cylinder and provided with a port arranged tocooperate with said ports in a predetermined order, and a secondsuperposed valve sleeve provided with a port arranged to cooperate withthe inlet and exhaust ports and a second port arranged to cooperate withthe ignition ort.

13. n a hydrocarbon engine, in combination, a cylinder, inlet, ignitionand exhaust ports located longitudinally of the cylinder in the ordernamed, a valve sleeve arranged 'to open and close the ports in apredetermined order, and a second superposed valve sleeve arranged tocooperate with the first sleeve.

14. In a hydrocarbon engine, in combination, a cylinder, inlet, ignitionand exhaust ports located longitudinally of the cylinder in the ordernamed, a pair of super-posed valve sleeves substantially concentric withthe cylinder, a port in one of said valve sleeves arranged to cooperatewith the ports in a predetermined order, and ports in the other valvesleeves arranged to cooperate with the first sleeve.

15. In a hydrocarbon engine, in combination, a cylinder, inlet, ignitionand exhaust ports located longitudinally of the cylinder in the ordernamed, a pair of superposed valve sleeves substantially concentric withthe cylinder, a port in one of said valve sleeves arranged to cooperatewith the ports in the predetermined order, a port in the second sleevearranged to govern the inlet and exhaust, and a port in the secondsleeve arranged to govern the ignition.

16. In a hydrocarbon motor, the combination with a cylinder having inletand exhaust ports, and a working piston in said cylinder, said cylinderalso having a spark plug in the side thereof, of a valve sleeve guidedby said cylinder and having a port adapted to register at differenttimes with said inlet and exhaust ports and with said spark plug.

17. In a hydrocarbon engine, in combination, a cylinder provided withports, a non-rotating piston working in the cylinder, a valve mechanismfor controlling said ports and including a valve sleeve arrangedconcentric with the piston and cylin-ifler and movable relatively tosaid piston and cylinder, a valve shaft rotated by the engine crankshaft. and means operated entirely by said valve shaft and including asecond rotating member driven by said valve shaft, for moving said valvesleeve axially and about its axis.

18. In a hydrocarbon engine, in combination, a cylinder provided withports, a non-rotating piston working in the cylinder, a valve mechanismfor controlling said ports and including a valve sleeve arrangedconcentric with the piston and cylinder and movable relatively to saidpiston and cylinder, a valve shaft rotated by the engine crank shaft,and means operated by said valve shaft and including a pair ofintermeshing worm gears arranged at right angles to each other, formoving said valve sleeve axially and about its axis.

19. In a hydrocarbon engine, in combination, a cylinder having inlet andexhaust ports, a non-rotating piston working in the cylinder, a valvemechanism controlling said cylinder ports for operating the.

engine on the four stroke cycle and including a valve sleeve arrangedconcentric with the piston and cylinder and movable relatively to saidpiston and cylinder, a valve shaft rotated by the engine crank shaft,and means operated by said valve shaft for actuating said valvemechanism and including devices for imparting to said valve sleeve acombined movement longitudinally of and about its axis, said devicesincluding a rotary member having its axis in a plane perpendicular tothe axis of said valve shaft and having Worm gear teeth, a slidingconnection between said member and said sleeve, and gearing between saidvalve shaft and said rotary member including a worm gear in mesh Withsaid worm gear teeth.

20. In a hydrocarbon engine, in combination, a cylinder having inlet andexhaust ports, a non-rotating piston working in the cylinder, a valvemechanism controlling said cylinder ports for operating the envgine onthe four stroke cycle and including a valve sleeve arranged concentricwith the piston and cylinder and movable relatively to said piston andcylinder, a valve shaft rotated by the engine crank shaft, and meansoperated by said valve shaft for actuating said valve mechanism andincluding devices for imparting to said valve sleeve a combined movementlongitudinally of and about its axis, said devices including a rotarymember having its axis in a plane with the axis of said valve sleeve andperpendicular to the axis of said valve shaft, said member having wormgear teeth, a sliding connection between said member and one side ofsaid sleeve, and gearing between said valve shaft and said rotary memberincluding a worm gear in mesh with said worm gear teeth.

Q1. In a hydrocarbon engine, in combination, a base or crank case, acylinder mounted thereon and having inlet and exhaust ports at its headend, a non-rotating piston working in the cylinder below said ports, avalve mechanism controlling said cylinder ports for operating the engineon the four stroke cycle and including a valve sleeve arrangedconcentric with the piston and cylinder and movable relatively to saidpiston and cylinder, a valve shaft in the crank case rotated by thelengine crank shaft, and means within said crank case and operated bysaid valve shaft for actuating said valve mechanism, said meansincluding devices for imparting to said valve sleeve a combined movementlongitudinally of and about its axis, and said devices including arotary member retained against endwfise movement and having its axis ina plane with the axis of said valve sleeve and perpendicular to the axisof said valve shaft, said member having worm gear teeth, slidingconnecting means between said member and one side of said sleeve, andgearing be'- tween said valve shaft and said rotary member including aworm gear in mesh with said worm gear teeth.

22. In a hydrocarbon engine, in combination, acylinder having inlet andexhaust ports, a non-rotating piston working in the cylinder, a valvemechanism controlling said cylinder ports for operating the engine onthe four stroke cycle and including a valve sleeve arranged concentricwith the piston and cylinder and movable relatively to said piston andcylinder, a valve shaft rotated by the engine crank shaft, and

means operated by said shaft for actuating said valve mechanism andincluding means for imparting to said valve sleeve a combined movementlongitudinally of and about its axis, said means including a memberconnected to the lower end of said sleeve so as to move relatively tothe sleeve and also partake of the longitudinal movement thereof, apivot on said member, and means operatively connecting said pivot andsaid shaft.

23.In a hydrocarbon engine, in combination, a cylinder provided withinlet and exhaust ports, a piston working in the cylinder,`a cylindricalmember coaxial with the piston and spaced from the inner cylinder wall,a valve sleeve having a series of ports extending around it insubstantially a single zone, said ports being adapted to cooperate withthe inlet and exhaust ports in the cylinder, said sleeve being arrangedbetween the cylinder and piston and between the cylinder and saidcylindrical member and movable relatively to said cylinder, piston andcylindrical member, said cylinder, piston and cylindrical member beingnon-rotatable about their own common axis, and means operated from theengine crank shaft for moving said sleeve axially relative to saidcylinder, piston and cylindrical member and about its own axis, saidcylindrical member closing the ports of the sleeve on the compressionand iiring strokes.

24. In a hydrocarbon engine, in combination, a cylinder provided withseparate inlet and exhaust ports near its head, a nonrotating pistonworking in the cylinder below said ports, a valve mechanism forcontrolling said ports and including a valve sleeve arranged concentricwith the piston andl cylinder and movable relatively to said piston andcylinder, said valve sleeve having a port adapted to register insuccession with said exhaust and inlet ports, and means for operatingsaid valve mechanism including devices for moving the valve sleeveaxially with a stroke less than the stroke of the piston and for partlyrotating said sleeve during each stroke of the piston, whereby the inletand exhaust ports are opened and closed on the four stroke cycle and theoil on the valve mechanism is elhciently distributed.

In a hydrocarbon engine, in combination, a working piston, a stationarycylinder head opposed thereto, a valve sleeve movable on the piston andhead and surrounding the combustion space between the piston and head,said sleeve having a port, a cylindrical member surrounding said valvesleeve and in which said sleeve slides, said member having a portadapted to cooperate with the port in the valve sleeve, and means forreciprocating said valve sleeve on the piston and head so that the portof said sleeve is covered by said head during part of the engine cycleand for simultaneously causing a` relative lateral movement between saidsleeve and member.

26. ln a hydrocarbon engine, in combi.- nation, a working piston, astationary cylinder head opposed thereto, a valve sleeve movable on thepiston and head and surrounding the combustion space between the pistonand head, said valve having a port, a cylindrical member surroundingsaid valve sleeve and in which said sleeve slides, said member having aport adapted to cooperate with the port in the valve sleeve, and meansfor reciprocating said valve sleeve on the piston and head andsimultaneously causing a relative lateral movement between said sleeveand member whereby thc port of the sleeve is covered by the head duringpart of thc engine cycle and the port of the cylindrical member iscovered by the sleeve during parts of the compression and firing strokesof said cycle.

27. A four cycle engine valve system, comprising a main cylinder havinginlet and exhaust ports at right angles to the axis of the cylinder nearits head, a valve mechanism adapted to control the admission, retentionduring compression and explosion,

movable valve sleeve having coacts with the inlet and erh y the maincylinder, a working piston moving within the sleeve means 'for movingsaid sleeve about its a1.. s to vary the lateral relation of the ports,and means for reciprocating said sleeve with a stroke less than thestroke oll the piston to carry said ports into and out of al inementlongitiulinally.

28. In a liydrocarbon motor, the combination with a cylinder ainl aworking piston therein, or' a pair et valve sleeves irranggfed to slideone on the other between e piston and the cylinder wall, means lorreciprocating said sleeves from the cranlr shaft, and means forconstantly rotating one oi said sleeves.

29. In a hydrocarbon motor nation with a cylinder and a w rliing pistontherein, of a pair of valve sleeves arranged between the piston and thecylinder wall and adapted to control the inlet and exhaust ports of saidcylinder, means whereby oil may be supplied to said sleeves, means 'forreciprocating said sleeves to properly open and close the inlet andexhaust ports, and means for rotating one of said sleeves slowly todistribute the oil.

30. In a hydrocarbon engine, in combination, a cylinder provided. withinlet, ex.- haust and ignition ports, and a valve mechanism forcontrolling the exhaust port and including a sleeve having a portarranged to cooperate with said inlet and ignitioiii ports.

3l. In a hydrocarbon engine, in combithe combination, a cylinderprovided*with inlet, ev-

haust and :ignition ports, an d a valve mechanism iter controlling theinlet and. exhaust ports and including a sleeve slidin,1 in the cylinderand having a port adapted to register with said ignition port, saidsleeve bcing also arranged to cooperate with said inlet and exhaustports in a predetermined order.

32. In a hydrocarbon motor, the combination with a cylinder having inletand exhaust ports, and a working piston in said. cylinder, said cylinderalso having a spark plug in the side thereof, ol a valve mechanismadapted to establish communication between said spark plug and theinterior of the cylinder and to cover and uncover said inlet and exhaustports, said mechanism including a sleeve having a port adapted toregister with said sparlrplug.

33. In a hydrocarbon. engine, in combination, a crank case and acylinder thereon having ports, a cylinder head, a ported sleeveextending downwardly from the head into the crank case and separatedfrom the cylinder wall, a second sleeve arranged between said portedsleeve and cylinder wall and having ports cooperating with the ports insaid cylinder and ported sleeve, said second sleeve being' adapted torotate, a ring arranged at the lower end of said second sleeve forrotating saine, means on the cylinder and crank case to guide said ringin its rotary movement, and means gearing with said ring ior rotatingit.

34. In a hydrocarbon engine, in combination, a cylinder provided withports, a nonrotatinn' sleeve within the cylinder and having portsadapted to cooperate with. the cylinder ports, a piston working withinsaid sleeve, a second sleeve arranged between the cylinder and thenon-rotating sleeve and having ports adapted to cooperate with the portsof said cylinder and noni'otating sleeve, said second sleeve beingsupported adjacent its lower end, and .means for rotating said secondsleeve.

In a hydrocarbon engine, in combination, a cylinder' provided withports, a nonrotating sleeve within the cylinder and having ports adaptedto cooperate with the cylinder ports, a piston working within saidsleeve, a second sleeve arranged between the cylinder and thenon-rotating sleeve and having ports adapted to cooperate with the portsof said cylinder and nonrotating sleevc, and means adjacent the lowerend of' said second sleeve Afor supporting and operating it, said meanscausing a eontinuolils rotation of said second sleeve.

8G. In a hydrocarbon engine, 'in combination, a cylinder provided withinlet and eX- haust ports arranged in diilerent transverse planes andseparated by a `partition, a piston working in the cylinder, a pluralityo't supeririosed valve sleeves mncentric with the cylinder', and one o'tthe valve sleeves having a port varranged to cooperate with the inletand exhaust ports.

37. In a hydrocarbon engine, in combination, a cylinder provided withinlet and eX- haust ports located 011e above the other and separated bya partition, a plurality of superposed valve sleeves working in thecylinder, a piston Working in the valve sleeves, and one of the valvesleeves having a port arranged to cooperate with the inlet and exhaustports.

38. In a hydrocarbon engine, in combination, a cylinder provided withinlet and exhaust ports arranged in dillerent transverse planes andseparated by a partition, a piston working in the cylinder, a pluralityot superposed valve sleeves concentric with the cylinder, one of thevalve sleeves having a port arranged to cooperate with the inlet andexhaust ports, and a pair of angularly displaced eccentrics foroperating the sleeves.

39. In a hydrocarbon engine, in combination, a cylinder provided withinlet and eX- haust ports arranged in different transverse planes andseparated by a partition, a piston working in the cylinder, a pluralityof superposed valve sleeves concentric with the cylinder, one of thevalve sleeves having a port arranged to coperate with the inlet andexhaust ports, and a pair of eccentrics for operating the sleeves, saideccentrics being angularly displaced substantially 30.

40. In a four-stroke cycle hydrocarbon engine, in combination, a maincylinder having inlet and exhaust ports, a valve mechanism adapted tocontrol the admission, retention during compression and explosion, andfinal expulsion of the working medium, said valve mechanism comprising aseparately movable valve sleeve having a port that coacts with the inletand exhaust ports of the cylinder, a Working piston operating Within thevalve sleeve, means for moving said sleeve so as to cause its port tomove in a curved path and register with first the exhaust port 0f thecylinder and then the inlet port thereof during the exhaust and intakestrokes of the piston, respectively, and bring the sleeve to its initialposition during the following compression and firing strokes of thepiston, and means for covering the port of said sleeve to closecommunication between the main cylinder ports and the engine explosionspace during said latter strokes of the piston.

41. In a Vfour-stroke cycle hydrocarbon engine, in combination, a maincylinder having inlet and exhaust ports, a valve mechanism adapted tocontrol the admission, retention during compression and explosion, andfinal expulsion of the working medium, said valve mechanism comprising aseparately moving valve sleeve having a port extending through the wallfrom the inner to the outer surface thereof, said port being adapted tocoact with the inlet and exhaust ports of the main cylinder, a workingpiston operating within the valve sleeve,

means in contact with one of the surfaces of the valve sleeve adapted tocover the port of said sleeve during the compression and firing strokesof the piston, means for moving said sleeve relatively to said maincylinder to cause the port of the sleeve to travel successively acrosssaid exhaust and inlet ports of the main cylinder on the exhaust andintake strokes respectively of the piston, means for reversing thedirection of travel of said sleeve relatively to said main cylinder onthe two next succeeding strokes of the piston, and means for causing anadditional relative movement between said sleeve and said firstmentioned means, for covering the port of said sleeve on said last two,or compression and ring, strokes of the piston. i

42. The combination with the cylinder of an internal combustion enginehaving inlet and outlet ports, of sleeves in axial coincidence with saidcylinder each having ports adapted to register with those of thecylinder and of the other sleeve, means for reciprocating one of saidsleeves longitudinally, and means for rotating the other sleeve, saidmeans adapted to operate at the same time. c

43. In a hydrocarbon engine, the combination with a cylinder and aworking piston therein, of a pair of valve sleeves arrangedsubstantially concentric with the cylinder and piston and adapted tocontrol the inlet and exhausts ports of said cylinder, and means forreciprocating said sleeves and for moving one of said sleeves laterally,to distribute the lubricant and to bring the ports of the sleeves andthe cylinder into cooperation.

In testimony whereof I afiix my signature in presence of two witnesses.

RUSSELL I-IUFF. Witnesses:

C. I. DALE, E. N. HEARN.

